RTL languages support for tab and main window header and article context menu
Refactor show dictionary info in "Groups" tab
DSL: Strip comments "{{...}}" when reading file
Update pt_BR.ts

Again, now translated by current github source code.
Merge pull request #367 from AlexandroCasanova/patch-2

Update pt_BR.ts
README: Use qmake-qt4 instead of qmake
Enhanced support for RTL languages in articles
Added an alternative GoldenDict icon, under GPLv2+. The icon is not yet used.

The plan is to use it at least in Ubuntu, it looks nice there.

See #183.
Move Android's icon.svg to icons folder
README: Add missing dependencies

Git and libqtwebkit-dev are listed now explicitly.
Linux: Use better and bigger (256x256) icon for GoldenDict.desktop file

The end result on Ubunutu looks MUCH, MUCH better compared to the
ugly 24x24 icon we had previously.